Top for ingot-molds.



E. F. KENNEY.

TOP FOR INGOT MOLDS.

APPLICATION FILED MAR. 25. 1914.

WITNESSES v l/VI/E/VTOH Patented Apr. 13, 1915.

EDWARD F. KENNEY, F WESTMONT BOROUGH, PENNSYLVANIA.

'ror non INGOJJ-MOLIDS.

nisasa Specification of Letters Patent.

Patented lllpr. 1L3, Jlhllh.

- Application filed March 25, 1914. Serial No. 823,013.

ToaZZ whom it may concern top for a metal ingot mold, whereby the ill molten metal which is poured therein, is maintained fluid at, or near, the top portion thereof for a longer time than that in those portions of the molds, which are adjacent to, or subjected to the cooling efiect of the metal part of the mold. By means of thisconstruction the cavity, due to shrinkage, is

. cated entirely within the to portion of the tit tit

ingot, leaving the body 0 the said ingot solid and oi good quality. I

My non-conducting top for ingot molds is contained within a casing or flask preferably made of metal adapted to set partially within the upper portion of a metal ingot mold and provided with means for supporting the same at various heights'therein, whereby the body of the ingot may be made shorter or longer as desired to accommodate a product of diflerent weights without waste.

Withm the outer casing is a lining or body of non conducting material preferably formed ofdried sand, loam or similar material, which is held temporarily in place within the jacket by means of pins'of wood or fusible meta which pro'eot therein from the inner surface of the aciiet. lhe inner form of the jacket or casing is preferably made tapering with the larger'en downward, and

after the molten metal is poured within the metal mold and the non-conducting top, the heat of the molten or hot metal burns ofi the wooden pins or melts the fusible ins, allowing the casing to be withdrawn rom the loam or sand lining, leaving said nonconducting lining on the top or sink-head portion of the ingot. In order to insure that this non-conducting material will remain around the sides of thesink-head of the ingot, ll may provide notches or grooves on the inner surfaces of said lining, or may roughen the same in such a way that it adheres to the sink-head allowing the casing to be withdrawn therefrom. in order to tacilitate this withdrawal, ll may, if desired, coat the inside of the metal casing with graphite, talc, soapstone, or may provide it with a lining of asbestos paper or other similar material to insure the withdrawal of the casing, leaving the lining substantially intact on the sink-head. After the lining is on the sink-head and the metal of the ingot sufficiently set, the entire ingot, including the sink-head, and the non-conducting ma terial surrounding, the sink-head, may be taken and-charged into a vertical heating or soaking-pit furnace, the action of the nonconducting'material continuing during the time when the heat of the ingot is'equalizing in said furnace. in this way ingots may be taken from the metal molds very quickly as soon as'their outer skin is set, and placed in the heating furnace with the non-conducting material surrounding their sink-head portions, thus permitting a better action in concentrating the shrinkage cavity in the sinkhead portion and also conserving the initial heat or the ingot, while at the same time maintaining the production to a much greater degree than it the ingots were allowed to stay for a longer time in the metal molds.

Having thus given a general description of my invention, 1 will now, in order to make the matter more clear, refer to the accompanying sheet of drawings forming part of this specification, and in which like charactors refer to like parts.

igure 1 is a vertical sectional elevation through the top of a metal ingot mold with my non-conducting top thereon, this view being taken on the line ll[ of Fig. 2. Fig. 2 is a top plan view of the construction shown in Fig. 1.

Referring now to the characters of reference on the drawings :--l represents a metal ingot mold, 2 the lifting lugs thereof, 3 the 'body portion of the ingot therein; 4: is the casing or flask forming part of my ingot top andcontaining the non-conducting material;

5 are ribs or projections extending from said casing and provided with a plurality of holes or sockets 6 therein, as shown, these holes or sockets 6 servingas supports for said cas- .ing adapted to receive the ends of the metal pins 7, which pins are adapted to rest on the top of the ingot mold and by inserting them in different holes the top structure may be raised or lowered to produce an ingot, the body portion of which is of any desired length or weight within limits. The casing or flask 4 forming part of my ingot .top may be set at any desired height within the ingot mold by setting the pins 7 in different'holes or sockets 6, and this is-done before the molten metal is poured within the mold, care being taken to have the lower surface of my refractory top at such a height that the body portion of the ingot below 10 the bottom of the refractory top'will be of the predetermined length and weight. The space 16. between the sides of my refractory top 4: and the inner sides of the upper portion of the ingot mold 1, as indicated on the drawings, may be filled with loam, clay or other refractory material to prevent the entrance into said space of the molten metal. This space 16' may be of varying width, dependent upon the irregularities of the mold 20 or the casing or flask forming part of my ingot top. As shown on the drawings, the insides of the ingot mold are tapering with the large end upward and the casing 1 is of similar form adapted to fit therein at various heights and the width of the space 16 will vary also within limits, dependent upon the depth to which the refractory top is set within the mold. The lifting lugs or staples on the casing are indicated as 8; 9 is an inwardly extending flange formed integral with the casing, forming the upper part of the pouring opening therein and 10 indicates the loam or dry sand or other similar non-conducting material forming the lining around the inner sides of the said casing. The inner side of the lining 10 is provided with indentations 11 which may either be in the form of individual pockets or circumferential grooves, or otherwise, with the idea of allowing the molten metal to flow therein and 'form a secure bond with the lining, so that the casing 4 may be lifted, leaving the lining o'n the sink-head portion of the ingot. number of pins 12 are'inserted in corresponding holes or openings near the lower edge of the casing, as shown, these pins projecting into the lining for the purpose, of temporarily supporting it prior to pouring the molten metal therein. After the molten metal has been poured into the mold and substantially fills the topthereof, the heat of said metal burns the Wooden pins or melts them if they are made of fusible metal, so that the lining is free from the casing. After this is done the metal casing may be Withdrawn, leaving the non-conduct ing lining on the sink-head 14.

As shown at the leftha'nd side of Fig. l, 13 represents a layer of smooth and refractory material, such as graphite, soapstone, talc, or it ma be composed of asbestos paper, or asbestos board, either with or without a coating of graphite, or similar material to insure the stripping of the casing from the lining. The shrinkage cavity shown in the sink-head portion 14 of the ingot is indicated as 15.- Although I have shown and described my improvements in considerable detail, I do not wish to be limited to the exact and spe- 7 cific details shown and described, but may use such substitutions, modifications or equivalents thereof, as are embraced within the scope of my invention, or as pointed out in the claims. 71 Having thus described my invention, what I claim and desire to secure by Letters Pat- '1. An ingot mold top comprising a casing adjustably fitted within the upper part of a mold to predetermine the length of the cast ingot, said casing being provided with openings at the top and bottom portions thereof, ,and a non-conducting lining temporarily-secured within said casing. 2. An ingot mold top comprising a casing 'adjustably fitted within the upper portion of an ingot mold to predetermine the length of the cast ingot, said casing being open at the upper and lower portions thereof, and a comparatively thick non-conducting linin extending around the inner side of the sai casing.-

3. An ingot mold top comprising a casing, the lower portion of'which is adjustably fitted within the upper portion of a mold adjacent to the inner side surfaces thereof to predetermine the length of the cast ingot, and a comparatively thick non-conducting llning temporarily secured within said casing.

4. An ingot mold top comprising a casing adapted to fit withinthe upper portion of the mold adjacent to the inner side surfaces thereof, a plurality of supports adapted to be previously arranged at different elevations on the outer sides of said casin prior to pouring the metal into the mold, w ereby it may be held at various predetermined heights to provide ingots of different lengths, and a non-conducting lining extending around the inner sides of said caslng.

5. An ingot mold top comprising a casing adapted to fit within the upper portion of a metal mold adjacent to the inner side surfaces thereof, and a comparatively thick non-conducting lining within said casing temporarily secured thereto by means destructible by heat.

6. An ingot mold top comprising a boxlike structure open at its upper and lower ends, a non-conducting lining within said structure, the lining being provided with indentations or roughenings on its inner surface adapted to secure it to metal poured therein.

7 An ingot mold top comprising a casing or box-like structure with open top and bottom, the inner side surfaces of the same being provided with a covering-of refractory lubricating material on which is a n0n-conducting lining, temporarily held in position by means destructible by heat.

8. An ingot mold top comprising a metallic casing, the lower-portion of which is adapted to substantially conform to and fit within the upper side surfaces of an ingot mold vmeans for supporting the same on said mold at different heights, and non-conducting lining temporarily secured to the inner side surfaces of the said casing by means destructible by heat.

9. An ingot mold top comprising a casing, the inner side surfaces of which taper up- Wardly, thereby forming a larger opening at the bottom than at the top, the said casing adapted to be previously set within the top of the mold at various pre-determined heights to determine the length of the cast ingot, prior to pouring the metal therein, a non-conducting lining within said casing and means for temporarily securing the same therein.

10. An ingot mold top comprising a metallic casing adapted to fit within the upper portion of a metal mold adjacent to the in ner side surfaces thereof, means for supporting the same at different heights thereon, the inner surfaces of said casing tapering upwardly and provided with a non-conducting lining with roughenings on its inner surface, said lining being temporarily secured to said casing by means destructible by heat.

In testimony whereof 1 hereto affix my signature in the presence of two witnesses.

. EDWARD F. KENNEY.

Witnesses:

A. DIX Trrrrn, H. J. MEEHAN. 

